Sanding device for automobiles



Nov. 5, 1929. M. sKoLNlK ET A1.

SANDING' DEVICE FOR AUTOMOBILES Filed Jan. 23, 1928 Max Skolnl/f. ,Bernrd Hellen Patented Nov.A 5, 1929 MAX SKOLNICK AND IBEBNAERD KELLER, FMINNEAPOLIS, MINNESOTA.

summe DEvIcE ron nuromonmns Application alea zanuary 2s, 192s. serialNo. 248,795. l

Our invention relates to sanding devices for automobiles and an objectis to provide a device for delivering sand upon the roadway in front ofthe driving wheels of the automobile. Another object of our invention isto provide a device of this character which is efficient in operationand economical to manufacture and which is under almost instant controlof the driver for the purpose of preventing accidents when driving overslippery surfaces.

The full objects and advantages of our invention will appear inconnection with the detailed description thereof, ad the novel` ofeatures of our inventive idea will be particularly pointed out in theclaims.

In the accompanying drawings wh1ch illustrate the application of ourinvention,-

Fig. 1 is a side elevation view of an automobile showing a sandingdevice applied thereto. Fig. 2 is a view of the sand box mostly invertical section. Fig. 3 is a view showing the discharge pipe invertical secton. Fig. 4 is a. view in section on the line 4-4 of Fig. 3.Fig. 5 is a view showing a wlring diagram. Fig. 6 is a fragmentary viewshowing a modification.

Referring to the 'construction shown in the drawings, the numeral 10designates one 30 of the running boards and the number 12 designates oneof the rear fenders of an automobile. It will be understood as a matterof course that these are of the same character for both sides of theautomobile and that therefore our device is duplicated for both of thesides. A sandbox 14 is secured to the rear fender 12 in any suitablemanner. As shown, the upper portion of the fender is provided with anopening surrounded by an ex- 43 ternally threaded boss 16 adapted toreceive an internally threaded flanged ring 18 which serves to hold thesandbox 14 in place. The upper side of this sandbox has a fillingopening which is closed by a screw cap 20 while the rear wall of thesandbox contains a piece Aof transparent material '-22 through which thecondition of the sandbox may be observed so that the sand may belreplenished when necessary. From the bottom of the sandbox, a plpe 24extends down inside the fender 12. 50 This pipe is curved to correspondto the curvature of the fender and at its lower end Ais provided with anozzle 26 having a screen l27 atits bottom and adapted to dlscharge sandm front of the rear or driving wheel. The 55 discharge of the sand is bygravity and in order to control the passage of sand through the plpe 24,the latter is provided with a shutoft' device or valve'which is shown inthe form of a damper 28 having a crank arm 30 extend- 60 ing outtherefrom. A spring 31 connecting this crank arm with a fixed part ofthe frame of the automobile normally holds the damper closed. The crankarm is connected by a flexible element 32 with a solenoid core 34 65forming part of a solenoid having a coil 36.

In order to control the delivery of sand from boxes at both sides of theautomobile, a exii ble element 32 is connected to asecond solenoid core34 operating in connection with a 7o second coil 36. The coils 36 and 36are in a circuit connected with a source of electrical energy designatedat 38 in Fig. 5. A switch 40 is placed in the circuit, this switch beinglocated within reach of the driver as by mounting it on the steeringwheel. Fig. 6 shows a modification in which a sandbox 42 is placed onthe running board 10 adjacent the rear fender. A pipe 44 leads from thebottom of this sandbox and the lower end of this pipe is provided with adischarge nozzle 46 adapted to discharge sand in front of the drivingwheel. In this form, the damper 28 is placed in the pipe 44 and isoperated in the manner previously set forth.

The operation and advantages of our invention will be readily understoodin connection with the foregoing description. By closing the switch 40,the solenoid cores 34 and 34' are actuated to cause the dampers to 90open so that sand is delivered in front of the rear wheels. When drivingover slippery roadways, the driver may almost instantly release some ofthe sand when he wants to stop the automobile. The release of sand willalso aid in starting the automobile by tending to rcvent spinning of thewheels and will tend to prevent skidding.

We claim: 1. A sanding device for automobiles comlower portion andmounted on the up er portion of the fender of an automobl e, said fenderbeing provided with an opening underneath the opening of said sandbox, acurved discharge pipe underneath the fender and conforming to thecurvature thereto, said discharge pipe having its upper end connectcdwith said openings and its lower end positioned in front of a drivingwheel of the automobile, a shutoff device for said pipe,

and mechanism for operating said shutoff device.

2. A sanding device for automobiles comrising a sandbox having anopening in its ower portion, an outwardly extending flange around saidopening, said opening being placed directly above an opening formed inthe upper portion of the fender of an automobile, an externally threadedboss surrounding said second opening, an internally threaded fiangedring screwed on said boss and having its iange engaging said outwardlyextending flange, a curved discharge pipe underneath the fender andconforming to the curvature thereof, said discharge pipe having itsupper end connected with said fender opening and its lower endpositioned in front of a driving wheel of the automobile, a shutoffdevice for said pipe, and mechanism for operating said shutoff device.

3. A sanding device for automobiles comprising a c lindrical receptaclefor sand. said receptacle ing rounded on its forward end and having anopening in its lower portion, said opening being placed directly abovean opening formed in the upper portion of the fender of an automobile,means for securing said receptacle to said fender in said position, acurved discharge pipe underneathv the fender and conforming to thecurvature thereof, said discharge pipe having its upper end connectedwith said openings and its lower end positioned in front of a drivingwheel of the automobile, a shutoff device for said pipe, and mechanismfor operating said shutoff device.

4. A sanding device for automobiles comprising a cylindrical receptaclefor sand, said receptacle having its rear end closed with transparentmaterial and having an opening in its lower portion, said opening beingplaced directly above an o ening formed 1n the upper portion of theender of an automobile, means for securing said receptacle to saidprising a sandbox having an opening in itsdevice for said pi e, andmechanism for operating said shuto device. l

In testimony whereof we hereunto aix our signatures.

MAX SKOLNIK. BERNARD HELLER.

